Shaft rotation indicator



Sept. 14, 1954 F. JARSAILLON SHAFT ROTATION INDICATOR Filed Aug. 29, 1950 N hmku //v VE/l/ 70 FRANco/s ARsA/I- oh' 55 Patented Sept. 14, 1954 UNITED STATES ATENT OFFICE Claims priority, application France September 8, 1949 8 Claims.

The present invention relates to circulationaccelerators for central beatings and especially to beatings with hot-water pipes. It has for its chief object the provision of a device which will greatly accelerate the water circulation and which will considerably increase the heat-production of the boiler at a very low cost.

Another object of the invention is to provide an accelerator which will work without any lubrication smoothly, without any noise, and without any noteworthy wear.

The device according to the invention consists in the particular construction or arrangement of a pump directly connected to an electro-motor and is placed at the inlet or outlet of the boiler, where it accelerates the circulation of the water, which usually takes place by means of thermal siphonage.

The accelerator being directly coupled with the motor, having no stuffing-box and being constantly lubricated by a water-film, works without any noteworthy wear and without any noise. In case of the stoppage of the motor, the pump will present an insignificant resistance to the passage of the water, in spite of its excellent operating eiliciency during normal working.

The accompanying drawing shows by way of example a constructional embodiment of the invention. In the drawing:

Figure 1 is a sectional view of an accelerator according to the invention;

Figure 2 is an enlarged sectional View of a detail of the combined indicating and control means in accordance with the present invention.

Figure 3 is a side view of Figure 2.

The accelerator shown in Figure 1 comprises a pump I, connected by means of a flange 2 to an electro-motor, comprising a stator 3 and a rotor 4 which are separated from each other by a jacket 5 made of metal or plastics.

A shaft 6 which is provided with a longitudinal drain '5 and which is centered with some clearance between the bearings 8 and 9 of the flange 2 and the snout Ill, couples the rotor 3 with the propeller or paddle-wheel ll of the pump l.

Between the flange 2 and the rotor 4 is provided a stop [2, one part of which consists of mobile jaws made of special bronze and the other part, adapted to the rotor, be made of stainless metal.

The snout It comprises holes l3 which allow the passage of a part of the water displaced by the pump I, through the ducts IA of the flange 2, and through the bearings 8 and 9 The drain 1 of the shaft 6 assures the reflux of the fluid,

traversing the bearing 8, and which then is reconducted through the openings l5 into the pump.

The bearings 8 and 9, as well as the step ii, are thus permanently lubricated by a liquid-film derived from the heating water, brought hereafter by centrifugal action towards the propeller I I.

This arrangement produces exceptional reliability in service, due to the permanent presence of a water-film between the mobile and immobile parts which prevents any friction of metal upon metal, thus rendering amount of the wear negligible.

The jacket 5, adjusted between the stator 3 and the rotor 4, assures the fluid tightness of the apparatus and avoids the drawbacks of the usual stuffing-boxes, which considerably restricts the power of the motor.

The pump l is adapted not to oppose any resistance to the passage of the heating water in case the motor should stop. Its working output is, notwithstanding, very high.

Apart from their usual construction, the stator 3 and the rotor 4 may consist of an agglomerate of iron-powder and. appropriate plastics. The rotor 4 may be of vacuum-die casted aluminium or copper. The windings of the stator 3 may be substituted by appropriately connected permanent magnets.

The plug connection being placed at the motor end in 28 greatly facilitates the mounting and connection thereof.

Since there is no friction between the turned parts and the bearings, the operation of the apparatus is absolutely noiseless.

The power consumption of the operating accelerator which increases considerably the circulation of the heating water is very low and whatever power is consumed is more than compensated by the considerable increase of the calorific output of the boiler, provided with such an acce1- erator.

The electro-motor may be replaced by a suitable turbine, fed by the water main, in a closed or open water system, in which case and in order to avoid the mixing of the water from the water main with the circulating heating water, a natural or artificial magnet is interposed between the shaft of both motor and propeller, forming thus a connection of the two shafts.

The accelerator may be used for fluids of all kinds, and may be driven by any appropriate means.

The operation of the circulation accelerator, to be described in greater detail hereinafter is so visually indicating the direction of rotation of shaft when the latter is rotating and for turning the shaft when the latter is not rotating. IThe combined indicating and operating means-is constituted of the following parts:

At the end of the case I ofthe :acceleratorand in the axis of its shaft a tapped projection 16 is provided, adapted to receive a guide comprising a threaded head ll of a flange I8, overtopped by a threaded casing I9 which, in turn, is covered by a nut 20, tightened by means of a gasket 2|. The boring of the guide .is filledby a rod'22 of a screwdriver 23 which is pressedback against the head I1 and out of reach of the slit 21- at the endof the shaft of the motorpropeller H, by means of a spring-24 resting against the underside of bolt head25.

In order to use the controller, the cap 20:-is.

unscrewed and the screwdriver 23 pushed into the slit 21. In case of necessity should the shaft 6 of the pump jam or freeze due to non-use of the apparatus, as for instance during the summer period, when the central heating and thus water circulation is stopped, the shaft of the pump may be turned loose by means of a wrench acting upon the bolt 25. cated by the bolt 25 which has anend shaped like a screw driver 23 in the casing, and the other end thereof visibly extending outside the casing I. The direction of rotation can therefore be determined not only through tactile indications but visual indication as well when .thecap 20 is removed.

The emplacement'of the rod 22 makesithe bolt 25 easily attainable even in the vicinity of -a wall or partition. When the cap 20 is. being unscrewed only a few drops of the fluid willflow off; for that reason the emptying of the apparatus is avoided.

It is to be understood that the described accelerator may be modified in' its' constructional details inany appropriatetmanner within. the scope of the invention.

Having described my invention, what Iclaim is:

1. A device for indicating the direction of rev-, olution of a shaft means and formanually turn-* ing the same wheneverrequired,comprising,\in combination, a casing adapted to enclose atleast one end of the shaft member, said casing formed with a bore arrangedopposite said one end of the shaft member; elongated combined indicating and operating means havingthe same. crosssection as said bore and arranged permanently and fluid tightly in said bore,-said elongated combined indicating and operating:means being arranged with one end thereof locatedtin said casing and the other end thereof permanently and visibly located outside of said casing, said elongated means being rotatable about its-axis and movable along said axis betweenlan inoperative position with said oneend thereof spaced from said one end of-said shaft,-and an.operative position when moved further into said case ing and engaging with its said one end said one. end of said shaft means; engagingmeansonsaid one end of saidshaft means and said oneiend. of

The direction of rotation. is indisaid elongated combined indicating and operating means for engaging said shaft means, said combined indicating and operating means in said operative position thereof indicating the direction of said shaft when the latter is rotating and adapted for rotating said shaft when the same is not rotating and said elongated means for rotative'movement with each other if one of said means is rotated; and means permanently urging said elongated combined indicating and operating means from said operative into said inoperative position, so that said indicating and operating means is actuated by pushing said elongated'means at said other end thereof into .said bore of: said casing and into engagement with said one of said shaft means.

2. Anarrangement of the character described, comprising, in combination, a casing having a bore; ashaft means arranged in said casing and having one end; means rotatably supporting said shaft means in said casingwith said one end thereof arrangedopposite said bore; elongated combined indicating and operating means having thesame cross-section as said bore and arranged permanently and fluid-tightly in said bore, said elongated combined indicating and operating means being. arranged with one end thereof locatedin said casing and the otherend thereof permanently and visibly located outside of said casing, said elongated meansbeingrotat able about its axis and movable along said axis between an inoperative position with said one end thereof spacedfrom said one end ofsaid shaft, and an operative .position whenmovedfurther into said casingand engaging withits said one end said one end of said shaftmeanasaid combined indicating. and operating means in said operating position thereof indicating the direction of rotationof said shaft when the .latter is rotating and adapted for rotating said shaft whenthe latter is not rotating; engaging means on said one end of said shaftmember and said one end of. said elongated .combined indicating and operating means for engaging. saidshaft means and said elongated means for rotative.

movement with each other if one ofsaid means is rotated; and means permanently.urging said elongated combined indicating and operating. means from said operative: into said inoperative.

position, so that said indicating and operating means is actuated by pushing-said meanaatsaid other end thereof .into said boreofsaidbasing into engagement with said one. end ofsaid shaft. means.

3. A device forindicatingthe direction of. revolutionof. shaft means and for manually turnelongated combined indicating and operating.

means being arranged with one end thereof located in said casing and the other end thereof permanently and visibly located outside of said casing, said elongated means being. rotatable about its axis and movable along said axis be-' tween an inoperative position with said one" end thereof spaced from said oneend of saidshaft, and an operative position when moved further into said casing and engaging with its 'saidone end said one end of said shaft means, said combined indicating and operating means in said operative position thereof visually indicating the direction of said shaft when the latter is rotating and adapted for rotating said shaft when the same is not rotating; engaging means on said one end of said shaft member and said one end of said elongated combinedindicating and operating means for engaging said shaft means and said elongated means for rotative movement with each other if one of said means is rotated; and means permanently urging said elongated combined indicating and operating means from said operative into said inoperative position, so that said indicating and operating means is actuated by pushing said means at said other end thereof into said bore of said easing into engagement with said one end of said shaft means.

4. A device for indicating the direction of revolution of shaft means and for manually turning said shaft means whenever required, comprising, in combination, a casing adapted to enclose at least one end of said shaft means, said casing formed with a bore arranged oppositesaid one end of said shaft means; a bolt serving as a combined indicating and operating means having the same cross-section as said bore and arranged permanently and fluid-tightly in said bore, said bolt serving as a combined indicating and operating means being arranged with one end thereof located in said casing and the other end thereof permanently and visibly located outside of said casing, and being rotat able about its axis and movable along said axis between an inoperative position with said one end thereof spaced from said one end of said shaft, and an operative position when moved farther into said casing and engaging with its said one end said one end of said shaft means, said combined indicating and operating means in said operative position thereof visually indicating the direction of said shaft when the latter is rotating and adapted for rotating said shaft when the same is not rotating; engaging means on said one end of said shaft means and said one end of said bolt serving as a combined indicating and operating means for engaging said shaft means and said bolt member for rotative movement with each other if one of said means is rotated; and means permanently urging said bolt serving as a combined indicating and operating means from said operative into said inoperative position, so that said indicating and operating means is actuated by pushing said means at said other end thereof into said bore of said casing into engagement with said one end of said shaft means.

5. An arrangement of the character described, comprising, in combination, a fluid-tight casing having a bore; shaft means arranged in said casing and having one end; means rotatably supporting said shaft means in said casing with said one end thereof arranged opposite said bore; an elongated combined indicating and operating means having the same cross-section as said bore and arranged permanently and fiuid tightly in said bore, said elongated combined indicating and operating means being arranged with one end thereof located in said casing and the other end thereof permanently and visibly located outside of said casing, and being rotatable about its axis and movable alc ng said axis between an inoperative position with said one end thereof spaced from said one end ofsaid shaft, and an operative position when moved further into said casing and engaging with its said one end said one end of said shaft means, said combined indicating and operating means in said operating position thereof indicating the direction of rotation of said shaft when the latter is rotating and adapted for rotating said shaft when the latter is not rotating; engaging means on said one end of said shaft means and said one end of said elongated combined indicating and operating means for engaging said shaft member and said elongated means for rotative movement with each other if one of said means is rotated; and means permanently urging said elongated combined indicating and operating means from said operative into said inoperative position, so that said indicating and operating means is actuated by pushing said means at said other end thereof into said bore of said easing into engagement 7 with said one end of said shaft means.

6. An arrangement of the character described, comprising, in combination, a casing having a bore; shaft means arranged in said casing and having one end; means rotatably supporting said shaft means in said casing with said one end thereof arranged opposite said bore; a bolt serving as a combined indicating and operating means having the same cross-section as said bore and arranged permanently and fluid tightly in said bore, said bolt serving as a combined indicating and operating means being arranged with one end thereof located in said casing and the other end thereof permanently and visibly located outside of said casing, and being rotatable about its axis and movable along said axis between an inoperative position with said one end thereof spaced from said one end of said shaft, and an operative position when moved further into said casing and engaging with its said one end said one end of said shaft means, said combined indicating and operating means in said operating position thereof indicating the direction of rotation of said shaft when the latter is rotating and adapted for rotating said shaft when the latter is not rotating; engaging means on said one end of said shaft means and said one end of said bolt serving as a combined indicating and operating means for engaging said shaft means and said bolt member for rotative movement with each other if one of said means is rotated; and means permanently urging said bolt serving as a combined indicating and operating means from said operative into said inoperative position, so that said indicating and operating means is actuated by pushing said means at said other end thereof into said bore of said easing into engagement with said one end of said shaft means.

7. An arrangement of the character described, comprising, in combination, a casing having a bore; shaft means arranged in said casing and having a recess at one end; means rotatably sup porting said shaft means in said casing with said one end thereof arranged opposite said bore; a bolt serving as a combined indicating and operating means having the same cross-section as said bore and arranged permanently and fluid tightly in said bore, said bolt serving as a combined indicating and operating means being arranged with an extension located in said casing and the other end thereof visibly and permanently located outside of said casing, and rotatable about its axis and movable along said axis between an inoperative position with said one end thereof spaced from said one end of said shaft, and an operative position when moved further into said casing and engaging with said 7 extensioncofesaid"bolt.said-recess in said one end of said nshaft'z for engaging: said shaft :rmember and said bolt-member for; rotative movement with-each other if one of said members is rotated; and means a permanently-surging: said bolt: serving as a combined indicating and operating means from said operative'zinto said inoperative position, so that saidindicating and operatinglmeans is actuated by, pushing'saidmeansatsaid other end thereof into saidbore of .said casing whereby said extension of: said bolt memberxengagesasaid recess in said shaft means. 7

8. An-arrangement.ofitheJcharacted' described comprising, in combination; a fluid-tight: casing having. a bore; a: shaft-means arranged-.1111 said casing, and, having a :recess at one :end: thereof means rotatablyt supporting said shaft means. in said casing :with said onexend thereof arranged opposite'said bore; aabolt, serving asa combined indicating and operatingmeanszhavinglthe. same cross-section as said boreand arranged permanently and fluid tightly in said bore,:said bolt serving as a combined indicating 1 and operating means being arrangedwith an extension located in said casing and the other. end thereofipermanently and visibly located outsideuof: said casing, and being rotatable about its'axis andmovable alongsaid axis between-anrinoperative position with said oneiendthereof spaced: iromwsaid one end of said shaft; and an operative position when moved farther into said casing: forengaging said extension; of said bolt with the recess in said one end of said shaft:meanswfornrotative:movement with each other if one. of saidmembersis rotated; resilient: means permanently; urgingxisaid x'bolt serving as 1 a combined indicating; and operating means fromvsaid operative into said inoperative position, sot'that said. indicatingand operating meansis actuatedsby pushing said means atxsaid other end thereot 1111120 1 said: bore formed: in. said casing whereby .said' extensinnt'ofisaid. boltimeans engages said recess in 59.11 shaitzmeans; 1. and a removable cap arranged: on the .outside, oizsaid casing, said capienclosing npartrof said bolt.

References Cited in thexflle oifthis patent UNITED- STATES PATENTS Number Name Date 486,651 Weiss i vNov. 22,1892

'900/127 Rush .Oct. 6, 1908 1,729,598 Draper Septs24, 1929 2,062,938 Ruppe Dec. 1, 1936 2,263,515 .Pezzillo Nov. 18,1941 2,492,672 Wood .Dec. 27, 1949 2.544.907 .Wilson Mar.13, 1951 

